You don’t need a big greenhouse to start seedlings or harden-off transplants in the spring. Our Patio Grow House has a trim 36" x 18" footprint, so it can fit in any sunny space, yet it provides almost 13 square feet of growing area on three shelves. Like larger, pricier models, it has double-walled polycarbonate glazing to capture and hold the sun’s heat — there’s even glazing on the back. On warm spring days, the gull-wing roof panels and double doors open to prevent overheating. Because the best spring sun often shines on the deck or patio, we’ve given the Grow House a handsome wood frame (treated with eco-friendly preservatives) to go with your patio furniture. It’s a lot of greenhouse at a surprisingly affordable price.